Method of liquefaction of natural gas

Details Method of liquefaction of natural gas Method of liquefaction of natural gas

F - Mech Eng,Light,Heat,Weapons

25

J

F25J 3/02 (2006.01) F25J 1/02 (2006.01)

Patent

CA 2079407

A method of liquefying natural gas, wherein the gas (1) is cooled and separated into a liquid phase (6) and a gaseous phase (8) which is expanded (9) and added to the liquid phase in the column (7), at the head of which the gas enriched with methane (21) is separated and recompressed (27) and carried to the liquefaction (32, 33, 34) whereas the liquid phase from the bottom of column (7) is expanded and rectified in column (14) ; the head effluent (19) being condensed (20) and conveyed as a reflux (25) to column (7); the pressure in column (7) being higher than that of column (14) ; the C3+ hydrocarbons from the bottom (16) being separated and the methane liquefaction (33, 34) being conventional.

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